ADT7468 Analog Devices, Inc., ADT7468 Datasheet - Page 3

• Manufacturer Part Number: ADT7468
• Description: Dbcool Remote Thermal Controller And Voltage Monitor
• Manufacturer: Analog Devices, Inc.

SPECIFICATIONS
T
All voltages are measured with respect to GND, unless otherwise specified. Typicals are at T
norms. Logic inputs accept input high voltages up to V
logic levels of V
are not production tested.
Table 1.
Parameter
POWER SUPPLY
TEMP-TO-DIGITAL CONVERTER
ANALOG-TO-DIGITAL CONVERTER
FAN RPM-TO-DIGITAL CONVERTER
A
Supply Voltage
Supply Current, I
Local Sensor Accuracy
Resolution
Remote Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error (TUE)
Differential Nonlinearity (DNL)
Power Supply Sensitivity
Conversion Time (Voltage Input)
Conversion Time (Local Temperature)
Conversion Time (Remote Temperature)
Total Monitoring Cycle Time
Total Monitoring Cycle Time
Input Resistance
Accuracy
Full-Scale Count
Nominal Input RPM
Internal Clock Frequency
= T
MIN
to T
MAX
IL
, V
= 0.8 V for a falling edge and V
CC
CC
= V
MIN
to V
MAX
, unless otherwise noted.
IH
= 2.0 V for a rising edge. SMBus timing specifications are guaranteed by design and
Min
3.0
−3.5
−4
−3.5
−4.5
40
80
85.5
83.7
81
MAX
even when device is operating down to V
Rev. A | Page 3 of 84
Typ
3.3
0.25
0.25
6
36
96
±0.1
11
12
38
145
19
70
140
109
329
5000
10000
90
90
90
Max
5.5
3
20
±1.5
+2
+2
±1.5
+2
+2
±2
±1.5
±1
100
200
±5
±7
±10
65,535
94.5
96.3
99
Unit
V
mA
μA
°C
°C
°C
°C
°C
°C
°C
°C
μA
μΑ
μΑ
%
%
LSB
%/V
ms
ms
ms
ms
ms
kΩ
kΩ
%
%
%
RPM
RPM
RPM
RPM
kHz
kHz
kHz
A
= 25°C and represent most likely parametric
For 12 V and 5 V channels
Test Conditions/Comments
Interface inactive, ADC active
Standby mode
0°C ≤ T
−40°C ≤ T
−40°C ≤ T
0°C ≤ T
−40°C ≤ T
−40°C ≤ T
First current
Second current
Third current
For all other channels
8 bits
Averaging enabled
Averaging enabled
Averaging enabled
Averaging enabled
Averaging disabled
For V
For all other channels
0°C ≤ T
−40°C ≤ T
−40°C ≤ T
Fan count = 0xBFFF
Fan count = 0x3FFF
Fan count = 0x0438
Fan count = 0x021C
0°C ≤ T
−40°C ≤ T
−40°C ≤ T
MIN
CC
. Timing specifications are tested at
A
A
A
A
channel
≤ 70°C
≤ 70°C; 0°C ≤ T
≤ 70°C , 3.3 V
≤ 70°C, V
A
A
A
A
A
A
A
A
≤ +100°C
≤ +120°C
≤ +100°C; 0°C ≤ T
≤ +120°C; 0°C ≤ T
≤ +120°C , 3.3 V
≤ +120°C , 5.5 V
≤ +120°C, V
≤ +120°C, V
CC
= 3.3 V
CC
CC
D
≤ 120°C
= 3.3 V
= 5.5 V
ADT7468
D
D
≤ +120°C
≤ +120°C